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Health A-Z

Medical Content Created by the Faculty of the
Harvard Medical School

Symptoms

Atrial fibrillation often doesn't cause any symptoms. When symptoms occur, they can include:

  • Palpitations (awareness of a rapid heartbeat)

  • Fainting

  • Dizziness

  • Weakness

  • Shortness of breath

  • Chest pain

Some people with atrial fibrillation have periods of normal heartbeats: the atrial fibrillation comes and goes. In many others, the atrial fibrillation becomes a constant condition, one that remains for the rest of their lives.

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From Health A-Z, Harvard Health Publications. Copyright 2007 by the President and Fellows of Harvard College. All rights reserved. Written permission is required to reproduce, in any manner, in whole or in part, the material contained herein. To make a reprint request, contact Harvard Health Publications. Used with permission of StayWell.

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